Total field magnetic analysis of nine seamounts northwest of the Marshall Islands, Western Pacific SCOPUS KCI

Title
Total field magnetic analysis of nine seamounts northwest of the Marshall Islands, Western Pacific
Author(s)
Lee, T.-G.; Lee, S.-M.; Moon, J.-W.; Lee, K.
KIOST Author(s)
Moon, Jai Woon(문재운)
Publication Year
2002-09
Abstract
Total magnetic field and high-resolution bathymetric data were collected over nine seamounts to the northwest of the Marshall Islands in the western Pacific. Magnetic parameters including inclination and declination were calculated from the magnetic anomalies using inversion algorithm of Plouff (1976), and a corresponding paleomagnetic pole was determined with the magnetic parameters. The paleomagnetic poles determined in this study were compared with the previous apparent polar wander path (APWP) of Pacific plate. Most seamounts of the study area have normal polarity. The study reveals that all nine seamounts in the study area formed in the southern hemisphere during the Cretaceous based on their comparison with the APWP of Pacific plate. The ages estimated from paleomagnetic poles can be divided by age into three groups: the oldest (OSMI and OSM3), middle age (OSM2, OSM4, and 6-2), and the youngest (OSM5-1, 5-2, 5-3, and 6-1). The former two groups and the latter seem to be coincident with two distinct pulses of Cretaceous volcanic activity (115-90 Ma and 83-65 Ma). As a whole the seamounts at southwest of the study area are older than at those northeast.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5772
DOI
10.4217/OPR.2002.24.3.197
Bibliographic Citation
Ocean and Polar Research, v.24, no.3, pp.197 - 205, 2002
Publisher
Korea Ocean Research and Development Institute
Keywords
Apparent polar wander path; Magnetic anomalies; Paleomagnetic poles; Total magnetic field
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Deep seabed exploration,Geochemistry,심해저자원탐사,지화학

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